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Cooling History of Mesozoic Magmatism and Implications for Large-Scale Gold Mineralization in the Jiaodong Peninsula, East China: Constraints from T-t Paths Determined by U-Pb Thermochronology of Zircon and Apatite

引用

Journal of Earth Science 2024年第3期35卷 878-889页

作者： Guangyan Zhou Mingchun Song Long Li Yan Luo dgraham pearson Jianbo Zhou Zhengjiang Ding Xuefeng Yu Yingxin Song Jie Li Shiyong Li Faculty of Earth Sciences China University of GeosciencesWuhan 430074China Department of Earth&Atmospheric Sciences University of AlbertaEdmontonAlberta T6G 2E3Canada Hebei Key Laboratory of Strategic Critical Mineral Resources Hebei GEO UniversityShijiazhuang 050031China Shandong Provincial No.6 Exploration Institute of Geology and Mineral Resources Weihai 264209China College of Earth Sciences Jilin UniversityChangchun 130061China Ministry of Natural Resources Key Laboratory of Gold Mineralization Processes and Resources Utilization Key Laboratory of Metallogenic-Geologic Processes and Comprehensive Utilization of Minerals Resources in Shandong ProvinceShandong Institute of Geological SciencesJinan 250013China Shandong Nuclear Industry Geological Group 273 Yantai 264006China

The Mesozoic intrusions of the Jiaodong Peninsula,eastern China,host giant gold *** the genesis of these deposits requires the determination of the source of the parental auriferous fluid and the timing of gold mineralization,which are strongly influenced by the cooling/uplift histories of the hosting *** performed an integrated U-Pb geochronology study on both zircon and apatite from four major magmatic episodes of the Jiaodong *** zircon and apatite U-Pb ages are 156.9±1.2 and 137.2±2.4 Ma for the Linglong intrusion,129.9±1.0 and 125.0±3.8 Ma for the Qujia intrusion,119.5±0.7 and 117.2±1.8 Ma for the Liulinzhuang intrusion,118.6±1.0 and 111.6±1.6 Ma for the Nansu intrusion,*** coupled zircon and apatite data of these granitoids indicate a slow cooling rate(11.9°C/Ma)in the Late Jurassic,and rapid uplift and cooling(35.8-29.2°C/Ma)in the Early *** dramatically increased uplift and cooling period in the Early Cretaceous are contemporaneous with large-scale gold mineralization in the Jiaodong *** implies that thermal upwelling of asthenosphere and related tectonic extension played an important role in gold remobilization and precipitation.

关键词： magmatism geochronology zircon apatite gold deposits Jiaodong Peninsula

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